Impacts of external fields and Rashba and Dresselhaus spin–orbit interactions on the optical rectification, second and third harmonic generations of a quantum ring

Pourmand, Seyed Ebrahim; Rezaei, G.; Vaseghi, B.

doi:10.1140/epjb/e2019-90717-6

Cited by 13 publications

(4 citation statements)

References 43 publications

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“…The ORC of GaAs/Al η Ga 1−η As quantum dots with MKCP will be systematically analyzed and discussed in this section, mainly discussing the effects of hydrostatic pressure P, the depth of limiting potential V , 0 temperature T , Al-concentration h and quantum dot radius R. The following are the fixed value and reference values we adopted in the calculation [23][24][25]:…”

Section: Resultsmentioning

confidence: 99%

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Spherical quantum dot in modified Kratzer–Coulomb potential: study of optical rectification coefficients

Li¹,

Chang²,

Ma³

2022

Commun. Theor. Phys.

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We consider the effects of quantum dot radius, confinement potential depth and controllable effective mass on the optical rectification coefficient (ORC) in spherical quantum dots, which is confined with Modified Kratzer-Coulomb Potential (MKCP). Using Nikiforov-Uvarov (N-U) method and compact density matrix theory, the ground state energy, optical rectification coefficient and wave function of electrons under the combined action of many factors are calculated. The results show that they affect the optical rectification response from different angles, including the position of peak and formant.

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Section: Resultsmentioning

confidence: 99%

“…The changes of optical rectification coefficients of intersubband transitions are calculated by the compact density matrix method and iterative method. The expression of the ORC can be obtained [23][24][25].…”

Section: Theorymentioning

confidence: 99%

Spherical quantum dot in modified Kratzer–Coulomb potential: study of optical rectification coefficients

Li¹,

Chang²,

Ma³

2022

Commun. Theor. Phys.

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“…Spin-orbit coupling in QRs can enable efficient manipulation and control of spin states, which is essential for spin-based electronic devices [10,11]. The effects of spin-orbit interaction (SOI) on the opto-electronic properties of QRs have also been investigated [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Double Quantum Ring under an Intense Nonresonant Laser Field: Zeeman and Spin-Orbit Interaction Effects

Mora-Ramos,

Vinasco,

Radu

et al. 2023

Condensed Matter

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We theoretically investigate the properties of an electron energy spectrum in a double GaAs-Al0.3Ga0.7As quantum ring by using the effective mass and adiabatic approximations, together with a realistic description of the confining potential profile, which is assumed to be deformed due to the application of an intense nonresonant laser field. The effects of the applied magnetic field and spin-orbit interaction are included. We discuss the features of the lowest confined energy levels under a variation of magnetic field strengths and intense laser parameters. The influence of this external probe on the linear optical absorption response associated with interlevel transitions is analyzed by considering both the presence and absence of spin-orbit effects.

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“…Using density matrix formalism and iterative methods, the analytical expressions for the SHG and THG of spherical quantum dots can be derived. In our study, the relationship for the THG coefficient is represented as [43][44][45][46]…”

mentioning

confidence: 99%

Dynamics of the nonlinear optical second- and third-harmonic generation in quantum well due to hydrostatic pressure and temperature

Yan,

Li,

Cai

2024

EPL

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We studied the effects of hydrostatic pressure and temperature on the second and third harmonic generation (SHG and THG) of nonlinear optics semi-parabolic GaAs/Al0.3Ga0.7As quantum well. By solving the Schrödinger equation numerically, we can determine the system's subband energy levels and propagation wave functions, and then calculate its optical gain. The numerical simulation results show that both temperature and hydrostatic pressure can effectively improve the nonlinear optical performance of the system. As an interesting observation, we studied the mechanism of the two in this process. These findings highlight a feasible method to adjust the nonlinear optical performance of GaAs/Al0.3Ga0.7As quantum system through the subtle interaction between hydrostatic pressure, temperature and structural parameters.

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Impacts of external fields and Rashba and Dresselhaus spin–orbit interactions on the optical rectification, second and third harmonic generations of a quantum ring

Cited by 13 publications

References 43 publications

Spherical quantum dot in modified Kratzer–Coulomb potential: study of optical rectification coefficients

Spherical quantum dot in modified Kratzer–Coulomb potential: study of optical rectification coefficients

Double Quantum Ring under an Intense Nonresonant Laser Field: Zeeman and Spin-Orbit Interaction Effects

Dynamics of the nonlinear optical second- and third-harmonic generation in quantum well due to hydrostatic pressure and temperature

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